کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6584042 | 456361 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Long-term effect of Cu (II) on the phosphorous removal performance in enhanced biological phosphorous removal systems
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Industrial wastewater containing heavy metals that enters waste water treatment plants inescapably has a toxic impact on biological phosphorus removal process. The long-term effect of Cu (II) on the performance of the enhanced biological phosphorus removal system was investigated for about 100Â days. 0.5 and 2.5Â mg/L Cu (II) were dosed into two parallel SBR reactors (R1 and R2), respectively. The results showed that 0.5Â mg/L Cu (II) did not impact the performance, while 2.5Â mg/L Cu (II) significantly influenced its performance, which experienced an acute deterioration stage in the initial couple of days, followed by an unstable period, then a steady-state period. In the steady-state period, the conditions in R2 were more suitable to polyphosphate accumulating organisms than glycogen accumulating organisms. The phosphorus was removed through the transformation of free phosphorus to acid soluble phosphorus, and in R2, its efficiency reached 96.1%, 11.7% higher than that in R1. In cycle study, higher concentration of poly-phosphate, less concentration of glycogen, higher activities of exopolyphosphatase and polyphosphate kinase were also observed in R2 than that in R1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 281, 1 December 2015, Pages 164-173
Journal: Chemical Engineering Journal - Volume 281, 1 December 2015, Pages 164-173
نویسندگان
Min Wu, Xiaolin Jiang, Yaoling Lv, Jie Zhou, Lu Yuan, Yulei Jia, Yayi Wang,